#include <dns_handler.h>

Inheritance diagram for DnsHandler:

Collaboration diagram for DnsHandler:

[legend]

Classes
struct	DnsResolverInfo

struct	QueryKey

Public Types
enum	Action { NONE , DNS_QUERY , DNS_UPDATE }

typedef boost::function< void(const boost::system::error_code &, boost_udp::resolver::iterator)>	ResolveHandler

typedef std::vector< boost_udp::resolver * >	ResolvList

Public Member Functions
	DnsHandler (Agent *agent, boost::shared_ptr< PktInfo > info, boost::asio::io_context &io)

virtual	~DnsHandler ()

bool	Run ()

bool	TimerExpiry (uint16_t xid)

void	DefaultDnsResolveHandler (const boost::system::error_code &error, boost_udp::resolver::iterator it, DnsItems::iterator item)

Public Member Functions inherited from ProtoHandler
	ProtoHandler (Agent *agent, boost::shared_ptr< PktInfo > info, boost::asio::io_context &io)

virtual	~ProtoHandler ()

void	Send (uint32_t itf, uint32_t vrf, uint16_t, PktHandler::PktModuleName)

void	Send (uint32_t itf, uint32_t vrf, uint16_t cmd, uint32_t param1, uint32_t param2, PktHandler::PktModuleName mod)

int	EthHdr (const MacAddress &src, const MacAddress &dest, const uint16_t proto)

int	EthHdr (char *buff, uint16_t len, const MacAddress &src, const MacAddress &dest, const uint16_t proto, uint16_t vlan_id)

int	EthHdr (char buff, uint16_t len, const Interface interface, const MacAddress &src, const MacAddress &dest, const uint16_t proto)

int	EthHdr (char *buff, uint16_t len, uint32_t ifindex, const MacAddress &src, const MacAddress &dest, const uint16_t proto)

void	VlanHdr (uint8_t *ptr, uint16_t tci)

void	IpHdr (uint16_t len, in_addr_t src, in_addr_t dest, uint8_t protocol, uint16_t id, uint8_t ttl)

uint16_t	IpHdr (char *buff, uint16_t buf_len, uint16_t len, in_addr_t src, in_addr_t dest, uint8_t protocol, uint16_t id, uint8_t ttl)

void	Ip6Hdr (ip6_hdr ip, uint16_t plen, uint8_t next_header, uint8_t hlim, uint8_t src, uint8_t *dest)

void	UdpHdr (uint16_t len, in_addr_t src, uint16_t src_port, in_addr_t dest, uint16_t dest_port)

void	UdpHdr (udphdr hdr, uint16_t len, const uint8_t src, uint16_t src_port, const uint8_t *dest, uint16_t dest_port, uint8_t next_hdr)

void	UdpHdr (uint16_t len, const uint8_t src, uint16_t src_port, const uint8_t dest, uint16_t dest_port, uint8_t next_hdr)

uint16_t	UdpHdr (udphdr *udp, uint16_t buf_len, uint16_t len, in_addr_t src, uint16_t src_port, in_addr_t dest, uint16_t dest_port)

uint16_t	IcmpHdr (char *buff, uint16_t buf_len, uint8_t type, uint8_t code, uint16_t word1, uint16_t word2)

void	IcmpChecksum (char *buff, uint16_t buf_len)

void	IgmpChecksum (char *buff, uint16_t buf_len)

uint32_t	Sum (uint16_t *, std::size_t, uint32_t) const

uint16_t	Csum (uint16_t *, std::size_t, uint32_t) const

uint16_t	UdpCsum (in_addr_t, in_addr_t, std::size_t, udphdr *) const

uint16_t	Ipv6Csum (const uint8_t src, const uint8_t dest, uint16_t plen, uint8_t next_hdr, uint16_t *hdr) const

uint16_t	Icmpv6Csum (const uint8_t src, const uint8_t dest, icmp6_hdr *icmp, uint16_t plen) const

Agent *	agent () const

uint32_t	GetVrfIndex () const

uint32_t	GetInterfaceIndex () const

uint16_t	GetLength () const

uint32_t	GetCmdParam () const

PktInfo *	pkt_info () const

uint32_t	EncapHeaderLen () const

Static Public Attributes
static const uint32_t	max_items_per_xmpp_msg = 20

Private Member Functions
bool	HandleRequest ()

bool	HandleDefaultDnsRequest (const VmInterface *vmitf)

void	DefaultDnsSendResponse ()

bool	HandleVirtualDnsRequest (const VmInterface *vmitf)

bool	ResolveLinkLocalRequest (DnsItems::iterator &item, DnsItems *linklocal_items) const

bool	ResolveAllLinkLocalRequests ()

void	BuildDnsResolvers ()

void	BuildDefaultDnsResolvers ()

bool	HandleMessage ()

bool	HandleDefaultDnsResponse ()

bool	HandleBindResponse ()

bool	HandleUpdateResponse ()

bool	HandleRetryExpiry ()

bool	HandleUpdate ()

bool	HandleModifyVdns ()

bool	UpdateAll ()

void	SendXmppUpdate (AgentDnsXmppChannel channel, DnsUpdateData xmpp_data)

void	ParseQuery ()

void	Resolve (dns_flags flags, const DnsItems &ques, DnsItems &ans, DnsItems &auth, DnsItems &add)

void	SendDnsResponse ()

void	UpdateQueryNames ()

void	UpdateOffsets (DnsItem &item, bool name_update_required)

void	UpdateGWAddress (DnsItem &item)

void	Update (InterTaskMsg *msg)

void	DelUpdate (InterTaskMsg *msg)

void	UpdateStats ()

void	GetDomainName (const VmInterface vm_itf, std::string domain_name) const

bool	GetDomainNameFromDhcp (std::vector< autogen::DhcpOptionType > &options, std::string *domain_name) const

void	GetBaseName (const std::string &name, std::string *base) const

std::string	DnsItemsToString (DnsItems &items) const

void	HandleInvalidBindResponse (DnsHandler *handler, dns_flags flags, const DnsItems &ques, DnsItems &ans, DnsItems &auth, DnsItems &add, uint16_t xid)

bool	NeedRetryForNextServer (uint16_t code)

bool	SendToDefaultServer ()

bool	DefaultMethodInUse ()

uint8_t	curr_index ()

uint8_t	last_index ()

void	IncrCurrIndex ()

bool	SendDnsQuery (DnsResolverInfo *resolver, uint16_t xid)

	DISALLOW_COPY_AND_ASSIGN (DnsHandler)

Private Attributes
dnshdr *	dns_

uint8_t *	resp_ptr_

uint16_t	dns_resp_size_

uint16_t	xid_

Action	action_

QueryKey *	rkey_

std::vector< DnsResolverInfo * >	dns_resolvers_

std::vector< DnsResolverInfo * >	def_dns_resolvers_

std::string	ipam_name_

std::string	domain_name_

autogen::IpamType	ipam_type_

autogen::VirtualDnsType	vdns_type_

DnsItems	items_

DnsItems	linklocal_items_

DnsNameEncoder	name_encoder_

bool	query_name_update_

uint16_t	query_name_update_len_

uint16_t	pend_req_

ResolvList	resolv_list_

tbb::mutex	mutex_

bool	default_method_

uint8_t	curr_index_

Friends
class	DnsTest

Additional Inherited Members
Protected Attributes inherited from ProtoHandler
Agent *	agent_

boost::shared_ptr< PktInfo >	pkt_info_

boost::asio::io_context &	io_

Detailed Description

Definition at line 21 of file dns_handler.h.

Member Typedef Documentation

◆ ResolveHandler

typedef boost::function<void(const boost::system::error_code&, boost_udp::resolver::iterator)> DnsHandler::ResolveHandler

Definition at line 24 of file dns_handler.h.

◆ ResolvList

typedef std::vector<boost_udp::resolver *> DnsHandler::ResolvList

Definition at line 25 of file dns_handler.h.

Member Enumeration Documentation

◆ Action

enum DnsHandler::Action

Enumerator
NONE
DNS_QUERY
DNS_UPDATE

Definition at line 40 of file dns_handler.h.

Constructor & Destructor Documentation

◆ DnsHandler()

DnsHandler::DnsHandler	(	Agent *	agent,
		boost::shared_ptr< PktInfo >	info,
		boost::asio::io_context &	io
	)

Definition at line 20 of file dns_handler.cc.

◆ ~DnsHandler()

DnsHandler::~DnsHandler ( )

virtual

Definition at line 29 of file dns_handler.cc.

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Member Function Documentation

◆ BuildDefaultDnsResolvers()

void DnsHandler::BuildDefaultDnsResolvers ( )

private

Definition at line 95 of file dns_handler.cc.

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◆ BuildDnsResolvers()

void DnsHandler::BuildDnsResolvers ( )

private

Definition at line 62 of file dns_handler.cc.

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◆ curr_index()

uint8_t DnsHandler::curr_index ( )

inlineprivate

Definition at line 97 of file dns_handler.h.

◆ DefaultDnsResolveHandler()

void DnsHandler::DefaultDnsResolveHandler	(	const boost::system::error_code &	error,
		boost_udp::resolver::iterator	it,
		DnsItems::iterator	item
	)

◆ DefaultDnsSendResponse()

void DnsHandler::DefaultDnsSendResponse ( )

private

Definition at line 280 of file dns_handler.cc.

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◆ DefaultMethodInUse()

bool DnsHandler::DefaultMethodInUse ( )

inlineprivate

Definition at line 96 of file dns_handler.h.

◆ DelUpdate()

void DnsHandler::DelUpdate ( InterTaskMsg * msg )

private

Definition at line 1069 of file dns_handler.cc.

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◆ DISALLOW_COPY_AND_ASSIGN()

DnsHandler::DISALLOW_COPY_AND_ASSIGN ( DnsHandler )

private

◆ DnsItemsToString()

std::string DnsHandler::DnsItemsToString ( DnsItems & items ) const

private

Definition at line 1176 of file dns_handler.cc.

◆ GetBaseName()

void DnsHandler::GetBaseName	(	const std::string &	name,
		std::string *	base
	)		const

private

Definition at line 1160 of file dns_handler.cc.

◆ GetDomainName()

void DnsHandler::GetDomainName	(	const VmInterface *	vm_itf,
		std::string *	domain_name
	)		const

private

Definition at line 1119 of file dns_handler.cc.

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◆ GetDomainNameFromDhcp()

bool DnsHandler::GetDomainNameFromDhcp	(	std::vector< autogen::DhcpOptionType > &	options,
		std::string *	domain_name
	)		const

private

Definition at line 1144 of file dns_handler.cc.

◆ HandleBindResponse()

bool DnsHandler::HandleBindResponse ( )

private

Definition at line 556 of file dns_handler.cc.

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◆ HandleDefaultDnsRequest()

bool DnsHandler::HandleDefaultDnsRequest ( const VmInterface * vmitf )

private

Definition at line 213 of file dns_handler.cc.

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◆ HandleDefaultDnsResponse()

bool DnsHandler::HandleDefaultDnsResponse ( )

private

Definition at line 549 of file dns_handler.cc.

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◆ HandleInvalidBindResponse()

void DnsHandler::HandleInvalidBindResponse	(	DnsHandler *	handler,
		dns_flags	flags,
		const DnsItems &	ques,
		DnsItems &	ans,
		DnsItems &	auth,
		DnsItems &	add,
		uint16_t	xid
	)

private

Definition at line 637 of file dns_handler.cc.

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◆ HandleMessage()

bool DnsHandler::HandleMessage ( )

private

Definition at line 519 of file dns_handler.cc.

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◆ HandleModifyVdns()

bool DnsHandler::HandleModifyVdns ( )

private

Definition at line 737 of file dns_handler.cc.

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◆ HandleRequest()

bool DnsHandler::HandleRequest ( )

private

Definition at line 127 of file dns_handler.cc.

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◆ HandleRetryExpiry()

bool DnsHandler::HandleRetryExpiry ( )

private

Definition at line 687 of file dns_handler.cc.

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◆ HandleUpdate()

bool DnsHandler::HandleUpdate ( )

private

Definition at line 726 of file dns_handler.cc.

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◆ HandleUpdateResponse()

bool DnsHandler::HandleUpdateResponse ( )

private

Definition at line 719 of file dns_handler.cc.

◆ HandleVirtualDnsRequest()

bool DnsHandler::HandleVirtualDnsRequest ( const VmInterface * vmitf )

private

Definition at line 296 of file dns_handler.cc.

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◆ IncrCurrIndex()

void DnsHandler::IncrCurrIndex ( )

inlineprivate

Definition at line 99 of file dns_handler.h.

◆ last_index()

uint8_t DnsHandler::last_index ( )

inlineprivate

Definition at line 98 of file dns_handler.h.

◆ NeedRetryForNextServer()

bool DnsHandler::NeedRetryForNextServer ( uint16_t code )

private

Definition at line 656 of file dns_handler.cc.

◆ ParseQuery()

void DnsHandler::ParseQuery ( )

private

◆ Resolve()

void DnsHandler::Resolve	(	dns_flags	flags,
		const DnsItems &	ques,
		DnsItems &	ans,
		DnsItems &	auth,
		DnsItems &	add
	)

private

Definition at line 844 of file dns_handler.cc.

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◆ ResolveAllLinkLocalRequests()

bool DnsHandler::ResolveAllLinkLocalRequests ( )

private

Definition at line 497 of file dns_handler.cc.

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◆ ResolveLinkLocalRequest()

bool DnsHandler::ResolveLinkLocalRequest	(	DnsItems::iterator &	item,
		DnsItems *	linklocal_items
	)		const

private

Definition at line 444 of file dns_handler.cc.

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◆ Run()

bool DnsHandler::Run ( void )

virtual

Implements ProtoHandler.

Definition at line 117 of file dns_handler.cc.

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◆ SendDnsQuery()

bool DnsHandler::SendDnsQuery	(	DnsResolverInfo *	resolver,
		uint16_t	xid
	)

private

Definition at line 399 of file dns_handler.cc.

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◆ SendDnsResponse()

void DnsHandler::SendDnsResponse ( )

private

Definition at line 890 of file dns_handler.cc.

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◆ SendToDefaultServer()

bool DnsHandler::SendToDefaultServer ( )

private

Definition at line 668 of file dns_handler.cc.

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◆ SendXmppUpdate()

void DnsHandler::SendXmppUpdate	(	AgentDnsXmppChannel *	channel,
		DnsUpdateData *	xmpp_data
	)

private

Definition at line 806 of file dns_handler.cc.

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◆ TimerExpiry()

bool DnsHandler::TimerExpiry ( uint16_t xid )

Definition at line 1113 of file dns_handler.cc.

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◆ Update()

void DnsHandler::Update ( InterTaskMsg * msg )

private

Definition at line 1027 of file dns_handler.cc.

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◆ UpdateAll()

bool DnsHandler::UpdateAll ( )

private

Definition at line 792 of file dns_handler.cc.

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◆ UpdateGWAddress()

void DnsHandler::UpdateGWAddress ( DnsItem & item )

private

Definition at line 1018 of file dns_handler.cc.

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◆ UpdateOffsets()

void DnsHandler::UpdateOffsets	(	DnsItem &	item,
		bool	name_update_required
	)

private

Definition at line 994 of file dns_handler.cc.

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◆ UpdateQueryNames()

void DnsHandler::UpdateQueryNames ( )

private

Definition at line 971 of file dns_handler.cc.

◆ UpdateStats()

void DnsHandler::UpdateStats ( )

private

Definition at line 1092 of file dns_handler.cc.

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Friends And Related Function Documentation

◆ DnsTest

friend class DnsTest

friend

Definition at line 56 of file dns_handler.h.

Member Data Documentation

◆ action_

Action DnsHandler::action_

private

Definition at line 105 of file dns_handler.h.

◆ curr_index_

uint8_t DnsHandler::curr_index_

private

Definition at line 127 of file dns_handler.h.

◆ def_dns_resolvers_

std::vector<DnsResolverInfo *> DnsHandler::def_dns_resolvers_

private

Definition at line 113 of file dns_handler.h.

◆ default_method_

bool DnsHandler::default_method_

private

Definition at line 126 of file dns_handler.h.

◆ dns_

dnshdr* DnsHandler::dns_

private

Definition at line 101 of file dns_handler.h.

◆ dns_resolvers_

std::vector<DnsResolverInfo *> DnsHandler::dns_resolvers_

private

Definition at line 112 of file dns_handler.h.

◆ dns_resp_size_

uint16_t DnsHandler::dns_resp_size_

private

Definition at line 103 of file dns_handler.h.

◆ domain_name_

std::string DnsHandler::domain_name_

private

Definition at line 115 of file dns_handler.h.

◆ ipam_name_

std::string DnsHandler::ipam_name_

private

Definition at line 114 of file dns_handler.h.

◆ ipam_type_

autogen::IpamType DnsHandler::ipam_type_

private

Definition at line 116 of file dns_handler.h.

◆ items_

DnsItems DnsHandler::items_

private

Definition at line 118 of file dns_handler.h.

◆ linklocal_items_

DnsItems DnsHandler::linklocal_items_

private

Definition at line 119 of file dns_handler.h.

◆ max_items_per_xmpp_msg

const uint32_t DnsHandler::max_items_per_xmpp_msg = 20

static

Definition at line 26 of file dns_handler.h.

◆ mutex_

tbb::mutex DnsHandler::mutex_

private

Definition at line 125 of file dns_handler.h.

◆ name_encoder_

DnsNameEncoder DnsHandler::name_encoder_

private

Definition at line 120 of file dns_handler.h.

◆ pend_req_

uint16_t DnsHandler::pend_req_

private

Definition at line 123 of file dns_handler.h.

◆ query_name_update_

bool DnsHandler::query_name_update_

private

Definition at line 121 of file dns_handler.h.

◆ query_name_update_len_

uint16_t DnsHandler::query_name_update_len_

private

Definition at line 122 of file dns_handler.h.

◆ resolv_list_

ResolvList DnsHandler::resolv_list_

private

Definition at line 124 of file dns_handler.h.

◆ resp_ptr_

uint8_t* DnsHandler::resp_ptr_

private

Definition at line 102 of file dns_handler.h.

◆ rkey_

QueryKey* DnsHandler::rkey_

private

Definition at line 106 of file dns_handler.h.

◆ vdns_type_

autogen::VirtualDnsType DnsHandler::vdns_type_

private

Definition at line 117 of file dns_handler.h.

◆ xid_

uint16_t DnsHandler::xid_

private

Definition at line 104 of file dns_handler.h.

The documentation for this class was generated from the following files:

Classes

Public Types

Public Member Functions

Static Public Attributes

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ ResolveHandler

◆ ResolvList

Member Enumeration Documentation

◆ Action

Constructor & Destructor Documentation

◆ DnsHandler()

◆ ~DnsHandler()

Member Function Documentation

◆ BuildDefaultDnsResolvers()

◆ BuildDnsResolvers()

◆ curr_index()

◆ DefaultDnsResolveHandler()

◆ DefaultDnsSendResponse()

◆ DefaultMethodInUse()

◆ DelUpdate()

◆ DISALLOW_COPY_AND_ASSIGN()

◆ DnsItemsToString()

◆ GetBaseName()

◆ GetDomainName()

◆ GetDomainNameFromDhcp()

◆ HandleBindResponse()

◆ HandleDefaultDnsRequest()

◆ HandleDefaultDnsResponse()

◆ HandleInvalidBindResponse()

◆ HandleMessage()

◆ HandleModifyVdns()

◆ HandleRequest()

◆ HandleRetryExpiry()

◆ HandleUpdate()

◆ HandleUpdateResponse()

◆ HandleVirtualDnsRequest()

◆ IncrCurrIndex()

◆ last_index()

◆ NeedRetryForNextServer()

◆ ParseQuery()

◆ Resolve()

◆ ResolveAllLinkLocalRequests()

◆ ResolveLinkLocalRequest()

◆ Run()

◆ SendDnsQuery()

◆ SendDnsResponse()

◆ SendToDefaultServer()

◆ SendXmppUpdate()

◆ TimerExpiry()

◆ Update()

◆ UpdateAll()

◆ UpdateGWAddress()

◆ UpdateOffsets()

◆ UpdateQueryNames()

◆ UpdateStats()

Friends And Related Function Documentation

◆ DnsTest

Member Data Documentation

◆ action_

◆ curr_index_

◆ def_dns_resolvers_

◆ default_method_

◆ dns_

◆ dns_resolvers_

◆ dns_resp_size_

◆ domain_name_

◆ ipam_name_

◆ ipam_type_

◆ items_

◆ linklocal_items_

◆ max_items_per_xmpp_msg

◆ mutex_

◆ name_encoder_

◆ pend_req_

◆ query_name_update_